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amphibian : any of a class (Amphibia) of cold-blooded vertebrates (such as frogs, toads, or salamanders) intermediate in many characters between fish and reptiles and having gilled aquatic larvae and air-breathing adults — Merriam-Webster   See also   OneLook


Roget’s II (, Merriam-Webster Thesaurus, Visuwords


Amphibians are vertebrates that is four-limbed and ectothermic of the class Amphibia. All living amphibians belong to the group Lissamphibia. They inhabit a wide variety of habitats, with most species living within terrestrial, fossorial, arboreal or freshwater aquatic ecosystems. Thus amphibians typically start out as larvae living in water, but some species have developed behavioural adaptations to bypass this. The young generally undergo metamorphosis from larva with gills to an adult air-breathing with lungs. Amphibians use their skin as a secondary respiratory surface and some small terrestrial salamanders and frogs lack lungs and rely entirely on their skin. They are superficially similar to reptiles but, along with mammals and birds, reptiles are amniotes and do not require water bodies in which to breed. With their complex reproductive needs and permeable skins, amphibians are ecological indicators; in recent decades there has been a dramatic decline in amphibian populations for many species. — Wikipedia

Amphibian (Encyclopædia Britannica)

Amphibians (David B. Wake & Michelle S. Koo, Current Biology)
Meet Amphibians (AmphibiaWeb, University of California, Berkeley)
AmphibiaWeb’s Illustrated Amphibians of the Earth (AmphibiaWeb, University of California, Berkeley)
AmphibiaWeb (YouTube Channel)

Amphibian Species of the World (Darrel Frost & American Museum of Natural History)

Amphibians (One Zoom)
Amphibia (Catalogue of Life)
Amphibian (WolframAlpha)




Herpetology is the branch of zoology concerned with the study of amphibians (including frogs, toads, salamanders, newts, and caecilians) and reptiles (including snakes, lizards, amphisbaenids, turtles, terrapins, tortoises, crocodilians, and the tuataras). Birds, which are cladistically included within Reptilia, are traditionally excluded here; the scientific study of birds is the subject of ornithology. Thus, the definition of herpetology can be more precisely stated as the study of ectothermic (cold-blooded) tetrapods. Under this definition “herps” (or sometimes “herptiles” or “herpetofauna”) exclude fish, but it is not uncommon for herpetological and ichthyological scientific societies to collaborate. — Wikipedia

Herpetology (Encyclopædia Britannica)

126 questions with answers in Herpetology (Research Gate)




DDC: 597.8 Amphibia, Amphibians (Library Thing)
Subject: Amphibians (Library Thing)

Subject: Amphibians (Open Library)

LCC: QL 667 Amphibians (UPenn Online Books)
Subject: Amphibians (UPenn Online Books)

LCC: QL 667 Amphibians (Library of Congress)
Subject: Amphibians (Library of Congress)

Subject: Amphibians (WorldCat)




Amphibians (Science Trek)
Amphibians (San Diego Zoo Wildlife Explorers)
Amphibians – Slimy Is Good (Biology4Kids)

MERLOT: Multimedia Educational Resource for Learning and Online Teaching
OER Commons: Open Educational Resources



Sam Noble Museum (YouTube Channel)
Sam Noble Museum (Official Website)

How to be a Herpetologist (Society for the Study of Amphibians and Reptiles)

Zoologists and Wildlife Biologists (CareerOneStop, U.S. Department of Labor, Employment and Training Administration)


World Congress of Herpetology
American Society of Ichthyologists and Herpetologists
Society for the Study of Amphibians and Reptiles
The Herpetologists’ League

American Society of Ichthyologists and Herpetologists
Zoological Association of America
Association of Zoos and Aquariums


Journal of Herpetology (Society for Study of Amphibians and Reptiles)
Herpetologica (The Herpetologists’ League)
Ichthyology & Herpetology (American Society of Ichthyologists and Herpetologists)
Herpetology (Nature)

Amphibians (EurekaAlert, American Association for the Advancement of Science)
Amphibians (bioRxiv: Preprint Server for Biology, Cold Spring Harbor Laboratory)
Amphibians (JSTOR)
Amphibians (Science Daily)
Amphibians (Science News)
Amphibians (
Amphibians (NPR Archives)


North American Amphibian Monitoring Program (US Geological Survey)


Amphibian (


More News …

Frogs and Reptiles News -- ScienceDaily Snakes, lizards, alligators, frogs and toads. From habitat information to frogs in stem cell research, you will find all the reptile and amphibian news here.

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    Conventional wisdom among ecologists holds that the more species there are inhabiting an ecosystem, the less vulnerable any one species will be to a threat like a parasite. A new study of tadpoles illustrates how overlapping biological and environmental factors can complicate how we value protecting diverse animal communities. The researchers found that environmental pollutants like road salt influence whether increased biodiversity helps or hinders disease outbreaks in wildlife, which can […]

  • Missing island explains how endemic species on...
    on July 25, 2023 at 4:31 pm

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  • Wormlike animals are first amphibians shown to...
    on July 24, 2023 at 4:27 pm

    Caecilians are an illusive type of snakelike amphibian that live in aquatic and subterranean environments. In some species, mothers produce a special type of nutrient-rich skin that juveniles consume, similar to the way in which humans breastfeed their children. A new study shows this behavior passes on microbes to juvenile caecilians, inoculating them to jump-start a healthy microbiome. - latest science and technology news stories internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine.

  • Tropical climates are the most biodiverse on...
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    on September 27, 2023 at 6:45 pm

    In two recent papers, Saint Louis University researchers report finding high concentrations of microplastics present in a Missouri cave system that had been closed to human visitors for 30 years.

  • Study shows protecting lands slows biodiversity...
    on September 27, 2023 at 3:00 pm

    Protecting large swaths of Earth's land can help stem the tide of biodiversity loss—including for vertebrates like amphibians, reptiles, mammals and birds, according to a study published in Nature Sept. 27.

  • Humans could serve as sentinels for 'forever...
    on September 26, 2023 at 4:00 am

    A new paper published in Science of The Total Environment by Environmental Working Group scientists proposes an intriguing concept: Humans can serve as a valuable resource for understanding the impact on other animal species of the toxic "forever chemicals" known as PFAS.

  • Okefenokee Natl. Wildlife Refuge to be nominated...
    on September 25, 2023 at 5:50 pm

    Georgia's Okefenokee National Wildlife Refuge, the largest intact blackwater swamp in North America and a critical home to thousands of plant and animal species, will be proposed for listing as a World Heritage Site, the federal government announced Friday.


Here are links to pages about closely related subjects.

Knowledge Realm

Terrestrial   (Earth)

Sphere Land, Ice, Water (Ocean), Air, Life (Cell, Gene)
Ecosystem Forest, Grassland, Desert, Arctic, Aquatic

Tree of Life
Microorganism Virus
Prokaryote Archaea, Bacteria
Eukaryote Protist, Fungi, Algae, Protozoa (Tardigrade)
Plant Flower, Tree
Cnidaria Coral, Jellyfish
Cephalopod Cuttlefish, Octopus
Crustacean Lobster, Shrimp
Arachnid Spider, Scorpion
Insect Ant, Bee, Beetle, Butterfly
Fish Seahorse, Ray, Shark
Amphibian Frog, Salamander
Reptile Turtle, Tortoise, Dinosaur
Bird Penguin, Ostrich, Owl, Crow, Parrot
Mammal Platypus, Bat, Mouse, Rabbit, Goat, Giraffe, Camel, Horse, Elephant, Mammoth
Walrus, Seal, Polar Bear, Bear, Panda, Cat, Tiger, Lion, Dog, Wolf
Cetacean Whale, Dolphin
Primate Monkey, Chimpanzee, Human


1.   The resources on this page are are organized by a classification scheme developed exclusively for Cosma.